“…The studies included in this cluster ranged from those looking at particular psychological disorders such as depression (Mazzucchelli, 2010), eating disorders (Joyce et al, 2012; Egan et al, 2013), obsessive-compulsive disorder (OCD) (Lee and Rees, 2011; Fitt and Rees, 2012; Kingdon et al, 2012; Rees and Anderson, 2013), and substance abuse (Priddis and Wallace, 2011; Bright et al, 2013) through to those studying transdiagnostic factors considered to be pivotal in the development and maintenance of psychological disorders, such as perfectionism (Egan et al, 2011, 2012a, b; Steele et al, 2013). The studies included in this group had a diverse range of methodologies.…”